Adding 2 images and looping values?

[PandoraBox]

Hello everyone,
just a quick question as I'm working on a GUI for Imageagick in python using PAGE and I'm working on some plug-in effects (The tool is going to be a total freebie) my question is can something like this be done :

pixel 1 on image 1 and pixel 1 on image 2.

200,200,200 image 1 pixel 1
127,127,127 image 2 pixel 1

To make image 3 pixel 1 the value of 200+127 = 327-255= 72

To get 72,72,72 as the pixel value in other words combining 2 images but looping the excess I can do this manually with imagej and excel but it's a pain in several places.

All the help is greatly appreciated.

PandoraBox

[snibgo]

I don't understand the question. I think you want to add two images, taking the result modulus the Quantum.

The compose setting ModulusAdd does what you seem to want, eg:

Code: Select all

convert xc:rgb(200,200,200 xc:rgb(127,127,127) -compose ModulusAdd -composite txt:

# ImageMagick pixel enumeration: 1,1,65535,srgb
0,0: (28.2353%,28.2353%,28.2353%)  #484848484848  srgb(72,72,72)

In this example, both images have only one pixel. They can be any size you want, of course.

[glennrp]

ModulusAdd is missing from http://imagemagick.org/script/compose.php but it does appear in the "-list compose" output.

[fmw42]

see http://www.imagemagick.org/Usage/compose/#modulus_add